Torch



l W. F. PAGEL.

TORCH. l APPLICATION FILED JULY 2 6, 19|?- 1,343,403. Patented June 15,1920.

I 2 SHEETS-SHEET I.

. @L 4 j@ z/ f Ii Y uw aged l WW E749 g- A w. F. PAGEL.

TORCH.

l APPLICATION FILED JuLY'26.1919.y

1,343,403. Patentd June 15, 1920,

2 SHEETS-SHEET 2.

- UNITEDSTAT WILLIAM PAGEL, or

TORCH.

, Application nieu July 2c, 1919. serial No. V313,54*?.

My invention relates to improvements in i blow pipe torches,particularly thaty .classV of torchesV known as plumbers blow pipetorches. l

The fuel for such torches has heretofore been limited to gasolene andparticularlyu gasolene of good quality, viz., easily vapor.Y ized. Itis" well'known that the grade' of available gasolene is graduallydropping down and it is practicallyimpossible to successfully operatethe ordinary plumbers blow pipe torch with this lower grade gaso-V lene,due mainly to the impossibility of ap'-` plying sufhcient'heat 'to thefuel as it approaches the outlet orifice'4 to cause it to properlygasify upon .escape into the flame; Another difficulty which isaggravated by the low grade fuel'rnowavailable is that as commonlyconstructed 'the adjusting valvev of thetorch becomes lso 'highlyheated' as to deposit carbon upon the vvalve surfaceand in shuttingoffsu-ch a valve `the partsV are" liable tobe distortedfto such anextent as to preclude proper adjustment ofthe flameV or the properclosing of the-shut off. n

Still another detrimental featureA of the plumbers -blow pipetorches nowcommonly used is that as commonly constructed the air pump, for placing`the liquidA fuel/under pressure forlifting it to "the burner, isconnected to the casing ofthetorch by a connection which permits more'orless]` gasolene toleak, this-is a source of consid-Y erable annoyanceand waste andit tively expensive to produce; Y.

In the torc'hof my inventionI provide simple means for applyingVsulicient heatlto the fuel, as it approaches the' burner'oriice, sothat I am not only enabled tosuccessfully make use' of the lowergradesof4 gasolene, but I am enabled to make successful use of kerosene-Vas a fuel for such torches, which, so far-as I am informed, has notbeeiisuc'.

is' relacessfully attained before, I am also lenabled to protect theburner from becominggjfde`Av stood by. reference to .the burner tube andfeed nozzle;

stroyed, I supply ia shutoff valve at such a distance from thegorifi'cethat the deposit of carbon is prevented, and I makeuse fof. j

the adjustable valve at the orifice merely for the purpose of adjustingthe iame, not for entirely shutting off the How .of fuel when the torchis not inuse. j Fvenifcarbon should be deposited upon and about `theshut olf valve lthis would be no serious detriment tothe device as theshut off valve is not used 'for adjusting the flow of fuel tothe'esc'ape orifice for regulatingY the flame, but merely to turn on orshut off*- the fuel supply. l A i f My invention also includes thefeature ofv attaining a substantially perfect mixture of "delicate4parts,which successfully uses lowk `grade gasolene or kerosene forfueland which kcan beareadily manufactured by the use of the Vusualshopequipment. V :It/Iy invention will bevmore readily undert saidaccompanying drawings in which: f j 'I `Figure l isf aside elevation,partly in vertical section, "of a torch made in accordance with myinvention; ff f Fig." 2 is a fragmentary top plan view yof linef-B ofFig. 1. i. Y 1

.Fig d is a fragmentary` detail'horizontal Fig.' 3 is a detail `verticalsection on the d .section on the Vline of Fig. l. Fig.V 5' is a viewl inelevation of the container shown-in Fig'l. Y

' Fig. 6 Yis a fragmentary vertical section similar to Fig. lgshowing aslight-modifica-v tion'off'the invention;jand 1' 4 igf? is a 'viewinside elevation of thewoven wire container shownin Fig. 6.

In said ydrawings l, is al reservoir for the liquid fuel, provided atits-lowerend witha filling'y plug 2. Uponloneside of the rese'rj the fueland air and an air admission means 7 Y Yfir voir is mounted aY vertical"istandpipe 3 through which the liquid fuelis vfedv to the burner whichis 'designated generally by '4l Vand is mounted upon the upperend ofthe' VVflower wall'i9, ofthe llame" tube above the chamber being formedintofa rounded baille or projection extending within the tube atitslower side; and providing la hollow battle against whichtheflamefwhi'ch is Aproduced within the tube 6, is adaptedto impinge initsl passage through the tube. Y The projectrv-ing wall ofthe VhollowYbaffle is relatively thin and is adapted to transmit a relativelylarge; quantity of heat to ,theffuelf Within the vchamber 8. Y y Y y. vY At the receiving end of the flameltube .it--

terminates in a mixing tube 10 4Whichis concentric with the flame -tubeand in axial alinement therewith.v The mixing tubel is. Y relativelyshort and terminates ati-its outer end in an outwardlyflared orfconedmouth V11. lts inner end is joined Ato-the adjacent end ofthe flameVtube by anend wall 12.

'.Opposite tothe flared end olv the `mixing tube, I arrange a feed'nozzle 13 Whichis in'` axial Valinement with the mixing tube and isprovided with a delivery orifice 14eV of rela tively smallYV diameterthrough which the generatedgas is adapted to be forced ina line streamwhich is projected axially into the openend or mouth of the` mixingtube. The delivery .nozzle is Vflaredpor- -coned "in-r wardly from 'theorifice 14 and `Lprovide a valve ste1n..1 l inaxial alinement with theorince and provided with a coned ortapered'- end adapted tofitfwithinthetapered nozzle CIV f efe 13 and ycontrol oradjustthejescape of the gas'through the orifice. F or adjusting thevalve .Y longitudinally from and; ltoward `f the orifice, I provideatlireadedgopening5 16v in said nozzle 4and the valve stemis correspond-Y inglygthreadedk Therear endet the? stem extends throughYa'fsuitablestuifingrlbox 18" and is lSquared at its extreme end ic-orjtheapplication of a suitable v-wrenchgorf'handle'for adj ustingjthe Ystemin the thre'adedopening. F or delivering .the gas .from the chamber 8 totheV delivery nozzlea feed passage 19 is` provided, extendingVrearwardly lfrom the chamber Sin the-lower wall 'of -the llame tube andterminating in `an enlarged opening. 2O threaded to receivea .forwardkextension Y 21 of the nozzle casting. `v`The feed'spasvsageisrcontinued in the'extension 21 andisv joined to the nozzle properby avertical pas- 'sagey 22. F or cutting ofi" the feed fa needle shutoffvalve "23 isprovid'edA arranged.inV N j end of the standpipe 3c1oses offthestandalinement with the feedpassage 19 and havthrough this member.

ingk a coned tip 24 adapted to bexclosed upon a valve seat25 atV therear end of the feed passage l19. The valve stein 23 is threaded Y,

tandis mounted in a threaded opening` 26 Vprovided in the' nozzlecasting so that it can beopened andA closed by rotation therein. Thestem extends out through a suitable stufn'g box d27V and carries on itsouter end a hand wheel 28.

The valve 14 is used merely for adjusting Vthe area ofthe deliveryorifice, Awhile the valve 23 is usedfor controllin(r vthe flow of `thefuel to the nozzle. Y :Thefdeliver'y lorifice remains open at all timesand after the torch has been in use and has become heated and. it isdesired that it be shutdown, the flow of fuel ris stopped by closing thevalve-23V soY i against the seat. 25. As the i gas 'flowing j l Y romthegenerator to the orifice His quite vhot any gas vwhichis contained inthenozzle onf-the vertical feed, passage 22 when the valve 23 is v,closedlescapes through the oiiiice v 14e Without depositing any carbon, andeven if carbon should be depositedV about :the

valvel 23, which is not likely,tliis could not affectthe operation Vothe torch asy valve-23J o can always be operated to shut off the 'liowof gascomplete'ly andis not used fori delicate vadj ustmentjo-f thefiowof' gas.

The means which Ifemploy fer effecting the generation of gascomprisesthe hollow baille@ and the upper. end ofthe' chamber 8 and m'eansforcausing the'liquidtuel toibe 1 carried into contactwith the undersurface of thebafiie. or at least .close enoughto itto be gasified'.VThis means consists'of a hollow ion thinible-likeimember 29 which isreelyopen at its upper end "and slightly coned at its j Y lowerend 30.Its lower end is adaptedto be lseated in the uppergend of the standpipe3 and is partly closedgiby an'inner circumferential flange 31.,v Thecenter ofthe lower end is-v open to permitthe-fuel oilto rise For, theypurpose `otcausingV the Vfuel tiil` to rise finto contact'withtheundersurface of the bafflel 9 I fill the member 29S with mineralvwooh'asbestos or some similar fibrOllS .mateeV rial 32, adaptedto'withstand a considerable f degree of heat. The mass of the filling. 32 isfk sufficient tofill the-member 29 and form a:

projecting-portion above the/:upper end thereofA sufficient sov thatwhen the Vtorchlrv parts are assembled the projecting mass ofVthe'fil'ling'material wil'lbe pressed into firm vcontact with thevbafiie 9 andjthemember 29V will be seated tightly upon the upper endrofthe standpipe 3.2 The membe'r29iis made of such a lengthfthat its upperVedge does-.not

contact'withthebaiile but yleaves a space at its upper end through whichthe vgenerated gas canescape after being-.formedby the-fy pipe exceptforv the .opening through the member 29 and causes allxof the liquid torise Athrough the .member 29 substantially into contact-with the bafiiey9to be gasified in its -passage to :the nozzle. The gasrwhic-h is thusproduced is hot vand dry even when kerosene is used for fuel.

v Such torches are `usually Vprovided'with a pan such as 33 for theburning 'of some of the fuel `in lighting the torch to heat theburnertube and the nozzle. ALI make thevpan 33 separate fromV the flame-tube and mount it on the standpipe 3 in a very simple man-v ner whichnot only holds the pan in proper position, but makes the pan liquid`tight at its bottom where the pipe 3 projects through same. Y

For this purpose, I preferably press the pan out of sheet metal. The panhas a bottom wall 34 and a side wall 35. Inmake a hole 36 in the bottomwall through which the pipe 3'projects and I provide a thimble 37sliding 'freely on the upper end of the pipe 3 and long enough to reachfromV the bottom of thepan to the lower end of the nozzle 7 on the flametube. vFor tightly bindingthe pan 33 and the thimble 37 'iniV position,Iprovide a nut 38 threaded upon' the upper end ofthe pipe 3 and adaptedto be screw hard up against the lower side of the pan. In assembling thedevice the flame tube is screwed down upon the upper end of the pipe 3toform a pressure tight connection therewith and then the nut 38 issecured up to hold the pan and thimble tightly against the lower end ofthe nozzle 7. By this means I am enabled to seat the pan 33 beneath theflame tube and to make aftight joint between the lower end of thethimble 37 andthe bottom of the pan.

The pump 5 consists of a thin walled A pump cylinder 39, in which isarranged a piston 40 securedonl the lower .end ofgan operating rod 4l.The piston 40comprises.

a leather cup 42 and head 43 threaded, on to the lower end of the rodand clamping the leather cup against a shoulder 44 on the rod. YThelower end of the cylinder 39 is externally threaded and is mounted in athreaded opening 45 provided in a connection member 46. The lower end ofthe cylinder seats firmly upon the bottom ofL the opening 45 and makes apressure tight joint.V

opening 45 in which the pump cylinder is Y mounted.

For controlling this port 49 I provide a valve 50 within the chamber48having a head 5l at its upper end adapted to close upwardly against aseat 52. The valve `has a Vstem f53 guided latV its -lovx'rerwend. in `aguide opening formed in a head 54Vby which I close the lower end of thechamber 48. The valve is normally held up against the seat by acompression spring 55 which surrounds thevalve stem 53 and is compressedbetween they valve yhead 5V and the closure 54. The valve thusconstructed is check valve, which permits air to enterV the V:reservoirfrom` the pump cylinder but prevents the fuel oilrising into the pumpcylinder or obtaining access to the joint vbetween the cylinder and theconnection.,

This form of mounting of the pump and its connection with the reservoirisvery substantial and strong, it'his very simple to manufacture, ,andit is more durable than such connections have been heretofore.

In operating, the reservoir having been filled nearly-.full of the` fueloil, the valve V23 is closed andthe pump operated to pro` duce a'pressure within the reservoir. The. valve 23 is opened .to let theliquid fuel rise up vtothe nozzle and vdrip into the Vpan 33, where itaccumulates and is burned to heat up the torch. The valve 23, meanwhileisf closed again. As soon asthe flame tube .be-

comes heated sufficiently, the'valve 23 is again opened land thepressure forces the Vfuel out ofV the'orifice li4 .through the mixfleased from the orifice. Y

This expanding stream of fuel enters the coned inlet 1l ofthe mixingtube 10 and draws suflicient air'y with it to-produce a flame once ithas been lighted. The fla-me is (projected through thellame tube.v

nce a llame has vbeen produced itv im!v pinges against thehollow bafflewhich soon transmits suflicient heat to thefuel heldin contact therewithby the fibrous'material 32 as to completely gasify the fuel so that whenthe torch is in 'full Voperation only` dry'hct gas passes throughthefeed passages I9 and 22 to the orifice 1**4.

In addition to the air mixing with' the fuell in the mixing'tube it isdesirableto provide another means for feeding air to theflame in theflame tube. Forl this purpose, I provide a narrow elongated slot 56extending substantially from end to end of the flame tube 6 and arrangedin the upperside thereof. This slot not only provides means for theaddition ofair at this point, but the air in entering at the upper sideof the tube iet tends to force the llame down upon the baille mineralwool or such like material inthe chamber 8. .In this form-the'container57 instead of being in the form of a tube is made of woven wire in theform of a basket litting loosely within the chamber and adapted to'holdthe mineral wooland prevent it dropping down into the open end ofthestandpipe 3. rIhecapillary action within the body of the mass of fibrousinaterial'insures the contact of the liojuidv with the'top upper wall ofthe chamber and theconsequent vaporization of the fuel.

As many modificationsV of my iii'vention will readily suggest themselvesto one skilled in the art, I do not limit or confine my inventionV to`the specificstructures-herein vshown and described. f

I claim: l l. In a blow pipe torch, an elongated cylindrical flame tube,the entranceend thereof being contracted,I a fuel feed nozzle' inalinement with said tube andradapted todi- 'Y rect'fuel through saidcontracted end to form a flameV within the tube, a hollow baffle pro.

f jecting into one side ofthe tube substantially midway between its endsand against whichthe flame is adapted to impinge,.and means Y forforcing liquid fuel throughsaid hollow baffle to be vaporized as-itpasses to said nozzle. Y. 2. In a blow pipe torch, a flame tubehavnozzle having an. orifice in alinement with said tube and adaptedy todirect fuel through said contracted endto form. a flame-within the tube,ahollow baille projecting Vinto one Vside of the :tube in the path ofthey llama,

said llame tube havingY a 'longitudinal airV admission slot in Vits wall.opposite to said` baffle, and means for forcing fuel through saidhollow baille and nozzletothe orice.VV

3. In a blow pipe torch, a flame tube, a

fuel feed nozzle having a feed orifice iiiy alinement with said tube, anairV mixingV f tube of relatively small diameter, also in alinement withthe llame tube, ,and vhaving a flared end intol which saidV nozzleisadapt-V ed to project the fuel,said inletv constituting a contractedentrance to saidflame tube, a thin walled hollow baille projecting intoone side of the tube between its ends and against Y which the llame isadapted torimpingefand means for forcing fuel oil into contact with inga contracted entrance end, a fuel feed.

said baffle to bevaporizedandfor directing the gas formed to saidnozzle'.-V 4. Ina blow pipe torch of theVIV kind de. scribed, a llametube, an air mixing tube smaller in'diameter than the flame tubeiinalinement therewith, the receiving end of the air mixingtube flaredoutwardly to ,forni a coned end, fuel feed nozzle :adapted to proj ect,lluicbfi'iel :into said flared end of the air Atube and form flameinsaid'Y llame tube, the -flamevtube havingairl admis-y sion means at` one`side between itsendS, `.ahollow baille projecting'into the flame'tubeopposite to said .airnadm'issionmeans,A said baille being thin walledand hollowpand .means for causingiliquid fuel to contactY vwith'theinner surface ofthe thin wall off the baffle to Vbegasilied and to bedelivered to said nozzle.` ,c Q ,c

v 5. In aV torch'.V ofA the kind described, a flame tube, afuel. feednozzleladapted to project fuel into one end ofsaid flame tube to form aflame, al thiny walledhollow battle projecting into, said llame ,tubeVfrom' one' side, a Yfuel heating chamber within said baille, a tubularcontainer Lforinineral wool within said chamber, a fuel passageentering.

thelower part of the chamber, -the r"lower end of said lcontainerentering the mouth vofV said feed passage, mineral wool'or the'rlilie insaid containery and 'held Ythereby against said thin walledbaflle, theupper end vof they containerV spaced from the baille wall, and

aV passage leading from saidchamber-to said ,i

nozzle. Y

6.' In a burner of the f kind described, a

flame tube a fuel eedjno'zzle having an ori.- l

lice in alinement kwith said tube andladapted to projecta' flame'throughsaid tube, saidl nozzle'v being coned and. provided., with coned needlevalve forV adjusting said orifice,

said flame tube havinga" fuel .heating passage in its side wall throughwhich'fluidlfuel is forced. to said nozzle' and a shut-off valve at'wadistancev below said nozzlev for "shut- Vting off the flowbf liquidfuelto said nozzle.

' In witness whereof Ihereunto subscribe" my name this 22nd day of July,A.

9aY Y s 1 .WILLIAM Fernseh.;

